WO2013089312A1

WO2013089312A1 - Bracket cover for vehicle wiper

Info

Publication number: WO2013089312A1
Application number: PCT/KR2012/001044
Authority: WO
Inventors: Byeng-Gab YU
Original assignee: Yu Byeng-Gab
Priority date: 2011-12-12
Filing date: 2012-02-13
Publication date: 2013-06-20
Also published as: KR101126724B1

Abstract

Disclosed is a bracket cover for a vehicle wiper. The bracket cover includes a body coupled with the tensions spring. A plurality of sliding coupling parts are formed at a lower portion of the body, in which the each sliding coupling part includes a vertical bar and a horizontal bar forming an L shape together so that the sliding coupling parts are coupled with the coupling holes formed in the first and second springs of the tension spring, and a plurality of elastic coupling parts are coupled with the coupling holes and the coupling grooves formed in the first and second springs of the tension spring, to restrict the tension spring from moving upward, down, left and right and to improve a coupling force of the tension spring.

Description

BRACKET COVER FOR VEHICLE WIPER

The present invention relates to a bracket cover for a vehicle wiper. In more particular, the present invention relates to a bracket cover for a vehicle wiper, in which a tension spring can be coupled without additionally providing a clamping device to the tension spring, in particular, the reliability of a product can be improved by producing the coupling force while maintaining the curvature of the tension spring, the breakage of the elastic coupling part can be reduced by coupling one elastic coupling part into one of coupling holes formed in the first and second springs constituting the tension spring together with a sliding coupling part, and coupling the other elastic coupling part into one of coupling grooves of the first and second springs, and the curvature of the tension spring can be maintained by forming a vertical bar of the sliding coupling part having a height longer than a thickness of the tension spring, and by forming a second inclination surface at an upper portion of the sliding coupling part.

In general, a vehicle wiper is used to remove foreign matters such as rainwater, snow, and dust attached to a front windshield or front and rear windshields of a vehicle.

Since the vehicle wiper clearly removes foreign matters from the surface of the windshield of the vehicle in the state that the wiper strip made of a rubber directly closely makes contact with the surface of the vehicle windshield. Accordingly, the contact state between the vehicle wiper and the windshield is an important issue.

Meanwhile, a tension spring, which has been subject to heat treatment and has a predetermined curvature, is inserted into the vehicle wiper to provide elasticity to the wiper strip. Accordingly, when the foreign matters are removed from the windshield of the vehicle, the wiper strip must smoothly make close contact with the surface of the windshield of the vehicle.

FIGS. 1 and 2 are views showing a vehicle wiper (see Korea Unexamined Patent Publication No. 10-2011-0031788) according to the related art. Hereinafter, the structure of the vehicle wiper will be described.

The vehicle wiper includes a pair of tension springs 120 provided therein with second fixing holes 123 and a wiper strip 110 coupled with the tension springs 120.

In addition, the vehicle wiper includes a bracket cover 150 coupled with an arm of the vehicle wiper and the tension springs 120.

The bracket cover 150 is provided at an upper portion thereof with an arm coupling part 151 coupled with the arm of the vehicle wiper, and provided at a lower portion thereof with a wiper coupling part 153 coupled with the wiper strip 110.

Further, a plurality of second fixing protrusions 155of the bracket cover 150 is formed at a lower portion thereof corresponding to the second fixing holes 123 and coupled with an elastic support member 156, and the elastic support member 156 can form elasticity by a lever 157.

In addition, coupling guides 154 are formed to the left and right of the second fixing protrusions 155 to guide the tension spring 120 when the tension spring 120 is coupled with the bracket cover 150.

The bracket cover 150 having the above structure is configured to be directly coupled with the tension spring 120, so that a clamping device may not be additionally installed at the tension spring 120. Accordingly, the curvature of the tension spring 120 can be maintained.

Meanwhile, FIGS. 3 to 4 are views showing a vehicle wiper (See Korean Patent Registration No. 10-1074135) having a different structure.

Hereinafter, the structure of the vehicle wiper will be described.

As shown in FIG. 3, the vehicle wiper includes a bracket cover 240, a clamp 230, tension springs 220 including coupling holes 222, and a wiper strip 210.

In more detail, as shown in FIG. 4, the bracket cover 240 is slidably coupled with the clamp 230.

To this end, the bracket cover 240 includes a housing 245 having a receiving space that is open to be coupled with the clamp 230 and a flange part 246 protruding toward the receiving space from an inner wall of the housing 245 and having a through hole 245.

In addition, the clamp 230 has a lateral side support part 36 which extends from the lateral side of the clamp 230 to be slidably supported with respect to the flange part 246, and is introduced to the housing 245 or withdrawn from the housing 245 through the groove 247.

Accordingly, after inserting the clamp 230 into the bracket cover 240 so that the lateral side support member 236 is arranged in the groove 247, the clamp 230 is slidably moved so that the lateral side support part 236 is supported on the flange part 246.

In addition, the bracket cover 240 includes an alignment protrusion 248 protruding toward the clamp 230, and the alignment protrusion 248 may be inserted into the coupling protrusion 32 having the form of a hollow at a predetermined position.

In other words, if the clamp 230 is slidably moved so that the alignment protrusion 248 is inserted into a hollow part 232b of the coupling protrusion 232, the position of the clamp 230 is determined.

In this case, since the alignment protrusion 248 has elasticity, when the clamp 230 is slidably inserted into the bracket cover 240, the alignment protrusion 248 is moved back inwardly by the clamp 230. Then, when the alignment protrusion 248 is aligned in line with the hollow part 232b of the coupling protrusion 232, the alignment protrusion 248 protrudes into the hollow part 232b, so that the position of the clamp 230 can be corrected.

In addition, the bracket cover 240 includes a coupling part 249 having elasticity to support the rear surface of the clamp 230 after the clamp 230 is inserted into the bracket cover 240.

However, in the bracket cover 150 having the structure of FIGS. 1 to 2 (see Korean Unexamined Patent Publication No. 10-2011-0031788), since a second fixing protrusion 155 is coupled with a second fixing hole 121 of the tension spring 120 in the state that the second fixing protrusion 155 has the form of a protrusion, the coupling force is reduced, and the tension spring 120 is frequently out of the place thereof in a vertical direction. Accordingly, the bracket cover 150 may not be actually used.

In particular, since the second fixing protrusion 155 is coupled with the elastic support member 156, if the second fixing hole 121 of the tension spring 120 is coupled to the second fixing protrusion 155, the curvature of the tension spring 120 is not formed by the distance between the second fixing protrusions 155, but a straight section is formed. Accordingly, the elasticity of the tension spring 120, which has subject to the heat treatment and has a curvature under the calculated elasticity, is reduced, so that the bracket cover cannot sufficiently press the wiper strip 110 making contact with the surface of the vehicle windshield when the vehicle wiper is actually attached to the vehicle. Accordingly, foreign matters may not be removed in a portion of the windshield.

Meanwhile, after coupling the metallic clamp 230 with the tension spring 220 coupled with the bracket cover 240 having the structure of FIGS. 3 and 4 (see Korean Patent Registration No. 10-1074135) through a sizing process, the clamp 230 may be coupled with the bracket cover 240. In this case, if the clamp 230 is coupled with the tension spring 220 through the sizing process, a straight section is formed at the central portion of the curvature of the tension spring 220 which has been maintained at a uniform curvature. Accordingly, the elasticity of the tension spring 220 formed in an initial stage is reduced, so that the bracket cover 240 cannot sufficiently press the wiper strip 210 making contact with the surface of the windshield when the vehicle wiper is installed and used in the vehicle. Accordingly, the foreign matters may not be removed from a portion of the vehicle wiper.

In addition, the flange part 246 of the bracket cover 240 slidably coupled with the lateral side support part 236 formed in the clamp 230 prevents the bracket cover 240 from being only vertically out of the place thereof and restricts the left or right movement through the alignment protrusion 248 and the coupling part 249. However, since the alignment protrusion 248 and the coupling part 249 have forms to which elasticity is applied, when force is applied to the alignment protrusion 248 and the coupling part 249 to move the alignment protrusion 248 and the coupling part 249 left or right, the alignment protrusion 248 and the coupling part 249 may be frequently broken. The reliability of the product can be degraded.

In order to solve the problem, there is provided a bracket cover for a vehicle wiper coupled with a tension spring having a predetermined curvature and including a pair of first and second springs spaced apart from each other at a predetermined distance in symmetry to each other, so that the first and second springs are coupled with a wiper strip within the distance, the first and second springs being provided therein with a plurality of elongated coupling holes, a plurality of elongated coupling grooves being formed at lateral sides of the first and second springs opposite to lateral sides of the first and second springs defining the distance therebetween. The bracket cover includes a body coupled with the tensions spring. A plurality of sliding coupling parts are formed at a lower portion of the body, in which the each sliding coupling part includes a vertical bar and a horizontal bar forming an L shape together so that the sliding coupling parts are coupled with the coupling holes formed in the first and second springs of the tension spring, and a plurality of elastic coupling parts are coupled with the coupling holes and the coupling grooves formed in the first and second springs of the tension spring, to restrict the tension spring from moving upward, down, left and right and to improve a coupling force of the tension spring.

According to the present invention, the vertical bar of the sliding coupling part formed at the lower portion of the body has a height longer than a thickness of the tension spring to maintain a curvature of the tension spring when the body is coupled with the tension spring.

According to the present invention, the tension spring including the first and second springs is coupled with the sliding coupling part and the elastic coupling part formed in the body such that the tension spring is restricted from moving one of left and right directions by inserting the horizontal bars of the sliding coupling part of the body into the coupling holes formed in the first and second springs and slidably moving the tension spring in a direction in which the vertical bar is formed to an extent that one side of the vertical bar of the sliding coupling part makes contact with one side of the coupling hole, one of elastic coupling part is coupled into one of the coupling holes formed in the first and second springs of the tension spring together with the sliding coupling part, and other elastic couplings part is coupled into one of the coupling grooves formed in the first and second springs of the tension spring.

According to the present invention, the bracket cover further includes a first inclination surface formed at the horizontal bar of the sliding coupling part.

According to the present invention, the bracket cover further includes a second inclination surface formed at an upper portion of the sliding coupling part positioned in one direction and formed at the lower portion of the body.

According to the present invention, the bracket cover further includes a guide step provided at the lower portion of the body and including a guide step vertical bar and a guide step horizontal bar which are coupled with the coupling grooves of the tension spring to prevent the tension spring from moving up, down, left and right.

According to the present invention, the bracket cover further includes a third inclination surface formed at the horizontal bar of the guide step.

According to the present invention, the horizontal bar of the guide step has a height longer than a thickness of the tension spring.

According to the present invention, the bracket cover further includes a curvature restricting step formed between the sliding coupling parts to restrict a curvature of the tension spring.

As described above, according to the present invention, even if a clamping device is not provided to the tension spring, the tension spring can be coupled. In particular, the coupling force of the tension spring can be improved in the state that the curvature of the tension spring is maintained, so that the reliability of the product can be improved.

In addition, one elastic coupling part is slidably coupled with coupling holes formed in the first and second springs constituting the tension spring together with the sliding coupling part, and another elastic coupling part is coupled with coupling grooves of the first and second springs, thereby preventing the elastic coupling parts from being damaged.

Further, the height of the vertical bar of the sliding coupling part and the height of the vertical bar of a guide step are longer than the thickness of the tension spring, so that the curvature of the tension spring can be maintained.

In addition, the tension spring can be smoothly coupled with the bracket cover through the first, second, and third inclination surfaces, so that the curvature of the tension spring can be more smoothly maintained.

Elasticity is additionally applied to the tension spring through the curvature restricting step, so that the adhesion between the wiper strip and the surface of the windshield of the vehicle can be improved.

FIG. 1 is a perspective view showing a vehicle wiper according to the related art;

FIG. 2 is a perspective view showing a bracket cover of FIG. 1;

FIG. 3 is a perspective view showing a vehicle wiper according to the related art;

FIG. 4 is a perspective view showing FIG. 3 at another angle;

FIG. 5 is an exploded perspective view showing a vehicle bracket cover according to the present invention;

FIG. 6 is a perspective view showing FIG. 5 at another angle;

FIG. 7 is a perspective view showing a lower portion of the body;

FIG. 8 is a perspective view showing the coupling of the bracket cover for the vehicle wiper according to the present invention; and

FIG. 9 illustrates perspective views of various embodiments of a tension spring.

Hereinafter, the structure of the present invention will be described in more detail with reference to accompanying drawings.

As shown in FIGS. 5 to 8, there is provided a tension spring 30 including a pair of first and

second springs

10 and 20 spaced apart from each other at a predetermined distance d in symmetry to each other.

The tension spring 30 is coupled with a wiper strip S made of a rubber and used to clean the surface of a vehicle windshield within the distance d.

In addition, a plurality of elongated coupling holes 11 and 21 are provided in the first and

second springs

10 and 20 constituting the tension spring 30, and a plurality of

elongated coupling grooves

12 and 22 having open one sides are formed in lateral sides opposite to lateral sides of the first and

second springs

10 and 20, which form the distance d. The tension spring 30 has a predetermined curvature.

The tension spring 30 may have various shapes only if the distance d is formed between the first and

second springs

10 and 20, and the coupling holes 11 and 21 and the

coupling grooves

12 and 22 are formed.

In other words, as shown in FIG. 9, the tension spring 30 may have a structure in which the first spring 10 is separated from the second spring 20, or an end portion of the first spring 10 is connected to an end portion of the second spring 20. In particular, although the tension spring 30 does not have the structure of FIG. 6, the tension spring 30 may have various structures only if the tension spring 30 has the distance d, the coupling holes 11 and 21, and the

coupling grooves

12 and 22.

Hereinafter, the structure of the body 40 will be described.

The body 40 is provided at an upper portion thereof with an arm coupling part 41.

Next, a sliding coupling part 50 is fixed to a lower portion of the body 40, and coupled with the coupling holes 11 and 21 formed in the first and

second springs

10 and 20 of the tension spring 30.

The sliding coupling part 50 has an L shape so that vertical and

horizontal bars

51 and 52 are positioned at a substantially right angle.

In particular, as shown in FIG. 10, preferably, a height h of the vertical bar 51 formed in the sliding coupling part 50 is longer than a thickness t of the tension spring 30.

The horizontal bar 52 of the sliding coupling part 50 may have a length equal to or slightly shorter than a length of the elongated coupling holes 11 and 21 formed in the first and

second springs

10 and 20 of the tension spring 30, respectively, so that the horizontal bar 52 can be inserted into the coupling holes 11 and 21.

In addition, a first inclination surface a1 may be further formed at the horizontal bar 52 of the sliding coupling part 50 so that the tension spring 30 can be easily coupled with the bracket cover, and the curvature of the tension spring 30 after the coupling of the tension spring 30 has been performed can be maintained.

Next, an elastic coupling part 60 is formed at a lower portion of the body 40 so that the elastic coupling part 60 may have elasticity.

In other words, the elastic coupling part 60 has elasticity so that the elastic coupling part 60 is completely pushed up when the tension spring 30 is inserted, and the elastic coupling part 60 returns to a normal position thereof when the tension spring 30 is completely slid.

The elastic coupling part 60 can be coupled with the coupling holes 11 and 21 and the

coupling grooves

12 and 22 formed in the first and

second springs

10 and 20 of the tension spring 30.

In this case, the tension spring 30 including the first and

second springs

10 and 20 is coupled with the sliding coupling part 50 and the elastic coupling part 60, which are formed at the lower portion of the body 40, as follows. After inserting the horizontal bars 52 of the sliding coupling part 50 of the body 40 into the coupling holes 11 and 21 formed in the first and

second springs

10 and 20, the tension spring 30 is slidably moved to the extent that one side of the vertical bar 51 of the sliding coupling part 50 makes contact with one side of the

coupling hole

11 or 12, thereby restricting the tension spring 30 from moving in one of a left or right direction. In addition, one elastic coupling part 60 may be coupled into one of the coupling holes 11 and 21 formed in the first and

second spring

10 and 20 of the tension spring 30 together with the sliding coupling part 50, and other elastic couplings part 60 may be coupled into one of the

coupling grooves

12 and 20 formed in the first and

second springs

10 and 20 of the tension spring 30.

Next, according to the present invention, one sliding coupling part 50 formed in one direction may be further provided at the upper portion thereof with a second inclination surface a2.

The second inclination surface a2 maintains the curvature of the tension spring 30 in the state that the second inclination surface a2 is coupled with the tension spring 30 having the predetermined curvature.

In addition, according to the present invention, the body 40 further includes a guide step 80 formed at a lower portion thereof.

The guide step 80 may include a guide step vertical bar 81 and a guide step horizontal bar 82 to restrict the up and down behaviors of the tension spring 30 while restricting the left and right behaviors of the tension spring 30 by coupling the guide step 80 with a plurality of

coupling grooves

12 and 22 formed in the first and

second springs

10 and 20 of the tension spring 30.

In this case, the guide step vertical bar 81 has a height h1 longer than the thickness t of the tension spring 30, and the guide step horizontal bar 82 has a third inclination surface a3 to facilitate the coupling with the tension spring 30 and maintain the curvature of the tension spring 30.

The guide step horizontal bar 82 of the guide step 80 has a length equal to or slightly shorter than the elongated coupling holes 12 and 22 formed in the first and

second springs

10 and 20 of the tension spring 30, so the guide step 80 can be inserted into the coupling holes 12 and 22.

In addition, a curvature restricting step 90 may be additionally formed between sliding coupling parts 50 according to the present invention.

The curvature restricting step 90 is provided at a region, in which the curvature of the tension spring 50 is maximized, to prevent the tension spring 30 from being excessively bent.

Hereinafter, the bracket cover 100 for the vehicle wiper according to the embodiment of the present invention will be described.

First, the coupling relation between the bracket cover 100 for the vehicle wiper according to the present invention and the tension spring 30 will be described below.

After arranging the

coupling grooves

12 and 22 of the tension spring 30 at a position of the guide step 80 formed at the lower portion of the body 40, the

coupling grooves

12 and 22 of the tension spring 30 are coupled with the guide step 80.

Next, while the

coupling grooves

12 and 22 of the tension spring 30 is being coupled with the guide step 80, the horizontal bar 52 of the sliding coupling part 50 formed at the lower portion of the body 40 is coupled with the coupling holes 11 and 21 formed in the first and

second springs

10 and 20 of the tension spring 30.

In this case, the elastic coupling part 60 is pressed by top

lateral sides

14 and 24 of the first and

second springs

10 and 20 formed in the tension spring 30 while moving up.

Meanwhile if the tension spring 30 has been completely coupled with the sliding coupling part 50 and the guide step 80 formed in the body 40, the tension spring 30 is slidably moved in a direction in which the vertical bar 52 of the sliding coupling part 50 is formed.

Then, one side of the vertical bar 51 of the sliding coupling part 50 makes contact with one side of the coupling holes 11 and 21 formed in the first and

second springs

10 and 20 of the tension spring 30 while being coupled with the side of the coupling holes 11 and 21, thereby restricting the tension spring 30 from moving in one of left and right directions and improving the coupling force between the sliding coupling part 50 and the tension spring 30.

In this case, the sliding operation of the tension spring 30 may be more smoothly achieved by the first inclination surface a1 formed at the horizontal bar 52 of the sliding coupling part 50. In addition, the first inclination surface a1 can maintain the curvature of the tension spring 30 after the sliding coupling part 50 has been coupled with the tension spring 30.

In addition, one surface of the horizontal bar 52 of the sliding coupling part 50 is arranged in such a manner that the surface of the horizontal bar 52 makes contact with the bottom surfaces 13 and 23 of the first and

second springs

10 and 20 of the tension spring 30, thereby restricting the tension spring 30 from moving up and down and improving the coupling force between the sliding coupling part 50 and the tension spring 30.

In particular, since the horizontal bar 52 of the sliding coupling part 50 has the height h longer than the thickness t of the tension spring 30, the curvature of the tension spring 30 can be maintained.

In this case, according to the present invention, the height h of the sliding coupling part 50 can be adjusted by directly forming the sliding coupling part 50 at the lower portion of the body 40.

In addition, the second inclination surface a2 is formed at the upper portion of the sliding coupling part 50 positioned in one direction, so that the curvature of the tension spring 30 can be maintained.

Meanwhile, the sliding coupling part 50 is coupled with the tension spring 30 while the

coupling grooves

12 and 22 of the first and

second springs

10 and 20 formed in the tension spring 30 are being coupled with the guide step 80.

The guide step 80 makes contact with each one side of the

coupling grooves

12 and 22 to restrict the tension spring 30 from moving in one of left and right directions. In addition, the guide step 80 has an L shape to clamp the bottom surfaces 13 and 23 of the first and

second springs

10 and 20 to prevent the tension spring 30 from moving up and down and improve the coupling force with the tension spring 30.

Similarly to the sliding coupling part 50, since the guide step 80 has the third inclination surface a3 formed at the horizontal bar 82 thereof, the guide step 80 allows the tension spring to smoothly slide while maintaining the curvature of the tension spring 30 by the height h1 of the vertical bar 81 longer than the thickness t of the tension spring 30.

Meanwhile, the tension spring 30 is slidably moved as described above so that the tension spring 30 is restricted from moving up, down, left or right through the sliding coupling part 50 and the guide step 80 and the coupling force of the tension spring 30 is improved. In addition, the tension spring 30 is restricted from moving left and right by the elastic coupling force 60.

If the tension spring 30 is slid, the elastic coupling part 60 pressed by the top

lateral sides

14 and 24 of the first and

second springs

10 and 20 of the tension spring 30 is coupled with the coupling holes 11 and 21 and the

coupling grooves

12 and 22 of the first and

second springs

10 and 20 formed in the tension spring 30.

In detail, the elastic coupling part 60 formed in one direction is coupled with the coupling holes 11 and 21 formed in the first and

second springs

10 and 20 of the tension spring 30.

In other words, the elastic coupling part 60 is coupled with the coupling holes 11 and 21 coupled with the sliding coupling part 60.

In addition, the elastic coupling part 60 formed in another direction makes contact with one side of the

coupling grooves

12 and 22 while being coupled with the

coupling grooves

12 and 22, to restrict the tension spring 30 from moving left and right, so that the reliability of the production can be improved.

In particular, according to the present invention, the curvature restricting step 90 is additionally formed between the sliding coupling parts 50 to press a portion of the tension spring 30 having an excessive curvature. Accordingly, when the wiper according to the present invention is installed in a vehicle, the wiper strip S is in the complete contact with the surface of the windshield of the vehicle, so that the wiper is not malfunctioned.

As described above, according to the present invention, the tension spring 30 is supported through the coupling holes 11 and 21 formed in the first and

second springs

10 and 20 constituting the tension spring 30 and the

coupling grooves

12 and 22 formed at the lateral sides of the tension spring 30, so that the coupling force of the tension spring 30 is improved. Even if a predetermined force is applied to the tension spring 30, the failure rate of components to support the tension spring 30 and restrict the movement of the tension spring 30 is reduced, so that the reliability of the product can be ensured, and the first and second springs are prevented from being twisted.

In addition, since the components are coupled with each other so that the distance d formed in the tension spring 30 to support the wiper strip S made of a rubber always has a constant value even if the wiper strip is deformed, the failure rate in the operation of the wiper caused by the deformation of the tension spring 30 does not occur when the wiper strip S wipes the surface of the windshield of the vehicle.

Although exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

A bracket cover for a vehicle wiper coupled with a tension spring having a predetermined curvature and including a pair of first and second springs (10 and 20) spaced apart from each other at a predetermined distance (d) in symmetry to each other, so that the first and second springs are coupled with a wiper strip (S) within the distance (d), the first and second springs (10 and 20) being provided therein with a plurality of elongated coupling holes (11 and 21), a plurality of elongated coupling grooves (12 and 22) being formed at lateral sides of the first and second springs (10 and 20) opposite to lateral sides of the first and second springs (10 and 20) defining the distance (d) therebetween, the bracket cover comprising:
a body (40) coupled with the tensions spring (30),
wherein a plurality of sliding coupling parts (50) are formed at a lower portion of the body (40), in which the each sliding coupling part (50) includes a vertical bar (51) and a horizontal bar (52) forming an L shape together so that the sliding coupling parts (50) are coupled into the coupling holes (11 and 21) formed in the first and second springs (10 and 20) of the tension spring (30), and a plurality of elastic coupling parts (60) are coupled into the coupling holes (11 and 21) and the coupling grooves (12 and 22) formed in the first and second springs (10 and 20) of the tension spring (30), to restrict the tension spring (30) from moving upward, down, left and right and to improve a coupling force of the tension spring (30).
The bracket cover of claim 1, wherein the vertical bar (51) of the sliding coupling part (50) formed at the lower portion of the body (40) has a height longer than a thickness of the tension spring (30) to maintain a curvature of the tension spring (30) when the body (40) is coupled with the tension spring (30).
The bracket cover of claim 1, wherein the tension spring (30) including the first and second springs (10 and 20) is coupled with the sliding coupling part (50) and the elastic coupling part (60) formed in the body (40) such that the tension spring (30) is restricted from moving one of left and right directions by inserting the horizontal bars (52) of the sliding coupling part (50) of the body (40)into the coupling holes (11 and 21) formed in the first and second springs (10 and 20) and slidably moving the tension spring (30) in a direction in which the vertical bar (51) is formed to an extent that one side of the vertical bar (51) of the sliding coupling part (50) makes contact with each one side of the coupling holes (11 and 21), one elastic coupling part (60) is coupled into one of the coupling holes (11 and 21) formed in the first and second springs (10 and 20) of the tension spring (30) together with the sliding coupling part (50), and other elastic couplings part (60) is coupled into one of the coupling grooves (12 and 22) formed in the first and second springs (10 and 20) of the tension spring (30).
The bracket cover of claim 1, further comprising a first inclination surface (a1) formed at the horizontal bar (52) of the sliding coupling part (50).
The bracket cover of claim 1, further comprising a second inclination surface (a2) formed at an upper portion of the sliding coupling part (50) formed at the lower portion of the body (40) and positioned in one direction.
The bracket cover of claim 1, further comprising a guide step (80) provided at the lower portion of the body (40) and including a guide step vertical bar (81) and a guide step horizontal bar (82) which are coupled into the coupling grooves (12 and 22) of the tension spring (40) to prevent the tension spring (30) from moving up, down, left and right.
The bracket cover of claim 6, further comprising a third inclination surface (a3) formed at the horizontal bar (82) of the guide step (80).
The bracket cover of claim 6, wherein the horizontal bar (52) of the guide step (80) has a height (h1) longer than a thickness (t) of the tension spring (30).
The bracket cover of claim 1, further comprising a curvature restricting step (90) formed between the sliding coupling parts (50) to restrict a curvature of the tension spring (30).